I want to set the 'custom thumbnails' to be the first media that is pulled from posts, but the issue is that not all media has a custom thumbnail set, so when I do that the rest of the posts will show the placeholder image for custom thumbnails, instead of 'first imagest from content'. I tried to go to the direct posts and remove the placeholder link but it just resets when I leave it blank. Is there any solution for this?
Welcome to our forum
#1. you can sort media source by dragging so if you place “First images from content” at the top to priority first and so on.
#2. if you don’t want display empty images (placeholder) you can unchecked.
Please see the screenshot
Let me know for more help.